Combined exhaust pipe extension and whistle



Patented May 1954 z'iisiazso COMBINED EXHAUST PimExTENsioN 7 AND "WHISTLE vifil' apmimiah Jim-e 9; 1950, Sefima16aar= 6" ciaiiiis. (c1. lis 138 i ,maybe directed through arr orifice'to produce a whistle efiect or-other sound very noticeable tothe human ear: i This '=principle -'is often applied in modifyingvthe 'exhaust "pipes of automobiles with a rather complex and unsatisfactory addition of pipes, valves, and control mechanism s that-the operator of' the automobile "may actfiate the'whistle' when desired.

In modifying the' b'asic structure-"of the -'auto mobile 'exhaus-t pipe 'an d sound-mufller,- leaky connections Y are created or" improper changes in pressure are efiected so' *that the -modification interferes with theengine" performanceand per-,

mits *n'o'xious'and toxic-gases to beemitted'in the vicinity-tor =the=pa ssengercompartment; Sometimes the exteiisive, complex and usually inadequat'econtrol mechanismfails to work and even at times becomes entangled in the other control mechanisms of' the' automobile? Further; the prior art deVices are objectionable "fronr many' standpointsj particularly with regard to expensive fabricationand'assembly; and since 'thesum cessfiil marketing-mi e device of this nature de penfis upon a low'retail"sale" price; the produc-' tion c0st=must be reduced to a minimum.

One-"of th objectsof in? invention is to provid 'a nombined exhaust extension and whistle whiol'r may be"*readily -:'apn1ied-to the terminal end-of anexhaust pipe without altering the basic exhaust structurew A further object of my invention is to provide a unitary exhaii'stextension and 'whistl'e. having a rcommon inlet for the passage of exhaust gases Another object of=myinventionis to'pro id a combined-exhaust extension and whistle arranged and' constructed to assure proper passage and expulsion of the exhaust gases.

Another object -0fmy -invention is to provide a: combined exhaust extension-rand whistle -having'il-an accurate-control which-normally preventsthe exhaust gases from "sounding the whistle;

Also, anobject ofmy inventionis' to provide a combinedexhaust extension and whistle in which ai-particulararrangement -of-- -an--; exhaust gas bafile produces an -effective whistle.

Adurtliermbj ect of my invention resides in the particular construct whereby the falrication' fli ,w e i s l t. Qn it t r na li- P mat g i t rna anx lar h 11 d r d W ihi hesqeketeor i e ine .11 5 nd is qs'ediati r r 'e e aib l' i A f fill?! Ob ect i the Part cu a con truction.- c r sion pipes may be readily-replaced when damaged" 05E .c c. N

A ther. Object Q my inf I '7 l l .V ,l ombined h us xi isnsi e,aedw isilevwh' it mi 1 tes;.anan aran9 I. sew andistym? metrically attractiveto the eye "Ot e anin urt er 9P1? y in en qn w b ap i ie tiramflt 9 cr nt cni alienin c mpa h companying drawings in whiz: reference designate correspo 1 7 V v 5lI iN" Q w of a particular em m nt iav Fig. 2 is .a cross-sect i e -Z0 W Riga?) is a front end-view of the embodiment Fig. iisaperspectiye-fiew of a detail. -.5 i a aa iswwq i 'd In he i er ernbe 1 at on t e, u ian ia lwm l w a n s Hamil! b 913 l s thrwg a ia e M which t I fIQI Ltl Q$PHYQ=Q9Q$K portions of each casting. The hollow cas 0 a j i f r oa lindaiealc iekte q n t It a paral el vliadr at ings 5 a d i wh h. ommumsate Within? 111 o op n n ;.t r eizar tes1t r We .1! 1. 5 tending i e:9 tra1. qrtipntqi heich evre i iv iy Provid d i eto ins t f m "ebutme w r bxi Outlet peni s .io mil ckst in the b y open, hollow exhaust extension 7 tube I 251; is

9' t1 esmn lllld2l 18 w ch imit the. r st rt. o insert th ube y,aco re p ainshp lowwn s .21: i ins t d. n the socke poiti n., -,9ut

22 fixed therein; Adjacent theso'clgeted" port 4 of whistle tube 2-! and-somewhat central thereof; arc uate portions" are -removed from bottom and top of this tube at "numeral 2-3.T ,,In

i sta-lletl within' the portion of whistleftubilk which extends into outlet 'Iii'isa'"bafile"'24' which is"circu1ara nd substantially conceived on itshase portionf-witha diameterf'slightly: less than' the readily effected.

sector with a pair of parallel dependent arms 25' the aligned apertures of the arms 25 and 25, to

allow the bafiie to be suspended transversely toward the closed end of the whistle tube 2!. Therefore, when the whistle tube 2! is inserted within the outlet opening l5, the pivot pin 26 is held in place by the abutting interior walls of the outlet opening it. The bailie, thus installed, will allow its base portion to be suspended substantially adjacent the arcuate opening at numeral 23.

A substantially L-shaped control shaft 21 is journaled for rotation substantially centrally of the hollow body on the same plane with and ad jacent the inner end of web ll. A circular flapper valve 28 of sufficient size to selectively seal either outlet openings E5 or IE is fixed to shaft 21 so that, when outlet opening i5 is closed, outlet opening It is open and vice-versa.

Within the hollow body and on castings i 0 and I0, annular sectors 2e and 2e radiate from points adjacent shaft 2! to the innermost sections of inlet opening it to provide a valve seat for flapper valve 2&3.

A drill of suficient diameter to protrude on both sides of web H is passed vertically through this web so that a portion of the adjacent walls of tubes 28 and 2| are removed in the process. The drill is then replaced by screw 38 of proper size to retain tubes 29 and 2 I. A torsion spring 3| is positioned on shaft 2? and is retained in place on casting it by the head of screw 35. This spring 26 normally retains flapper valve 28 in a position closing outlet opening it? and permitting the outlet opening Hi to remain open for conducting the gases through the exhaust tube 28. Retaining nut 32 looks screw 39 in place thus securely holding the surrounding parts toether.

In the operation of the present embodiment, the inlet opening I3 is fitted over the terminal end of an exhaust tail pipe and is held in place by adjustable clamp 33 circumscribing the cast ing Ill and lo adjacent inlet opening 93. Concentric sleeves 34 may be provided to reduce the diameter of inlet opening i3 to conform with the diameter of the tail pipe inserted. A plurality of stop tabs 3 extending from the inside of castings Hi and It may also be provided at a proper distance within the inlet opening to insure that the tail pipe does not obstruct the operation of flapper valve 28.

A control cable (not shown), enclosed in a flexible housing may be attached at an external leverage point on shaft 27, and extended to a point in the vicinity of the operator. The combined exhaust extension and whistle is now in place and ready for use. Under ordinary operation of the automobile, the exhaust gases passing out of the tail pipe, are conducted through the inlet opening it to the outlet opening 95 and out the exhaust extension tube 28.

When it is desired to sound the whistle, the remote control is actuated by the operator who pulls control shaft 2'! thus throwing flapper valve 28 against valve seat annular sector 29 and thereby shunts the exhaust gases into outlet opening I5. Now, the exhaust gases are directed around and through the restricted passage between the outer periphery of bafiie 24 and the inside adjacent walls of whistle tube 2!. The action of the gases tends to float the bafiie and allow these gases to move freely over all segments of the outer periphery of the baiiie. The turbulent gases then pass out of the arcuate openings at 23 on whistle tube 2! causing a constant whistling sound of great intensity and very audible to the human car.

My invention is very desirable from a standpoint of fabrication and assembly. The respective portions of web ll, annular sectors 29 and 29', shoulders l8 and I9, stop tabs 34, and flanges l2 and [2 may be cast integrally with castings ill and 10. Tubes 20 and 2| may be cut in equal lengthsfrom the same tubular stock. Holes may be easily drilled, the arcuate openings cut and cap 22 installed with very little effort. The castings iii and It may then be placed together with shaft 21 and flapper valve 23 installed on casting l0; and tubes 2i) and 2i installed and the assembly retained in position by bolts l I. Then the final step is to pass a drill through the assembly to provide a hole for screw 36 and install the screw with spring 3! and nut 32. When bolts l l and screw 36 are tightened, the assembly is completed and ready for installation on an automobile. The screws and bolts are so situated that all parts are securely fixed in their proper places.

All of the assembly operations may be effected in a minimum of time without the necessity of any special tools and without exercising any skill or tedious concentration. My invention may be produced on an assembly line utilizing only a few low cost materials and may be assembled by unskilled labor, which is a large factor in present day production cost. Therefore, the production cost of my invention is at a minimum and the ultimate retail price will be well within the financial limits of prospective buyers.

The tubes Zil and 2| may be fabricated from a rust resistant material and. may be plated with a chrome plating, or other similar metal, so as to present an attractive appearance at the rear of the exhaust pipe. The exhaust extension tube 20, when in position on an automobile, causes the exhaust gases to be discharged a slight distance away from the rear of the automobile body and thereby prevents the smoky discoloration usually formed on the car body by the regular exhaust pipe; and the double tubes give a simulating appearance of power which is greatly desired by many drivers.

It will be obvious to those skilled in the art that many modifications and changes may be made in the embodiment shown and described without departing from the scope of my invention as defined in the appended claims.

other end of said member, said member being provided'with an aperture intermediate its ends, and a baflie positioned within said member and arranged in cooperative relation with said aperture to form a whistle, said bafile being pivotally mounted for self-centering action within said member by the passage of gas on all sides of said baflie when said valve is operated to admit the flow of gas into said member.

3. In a whistle, a hollow tubular member, said member having a closed end, a valve operably arranged to control the admission of gas into the other end of said member, said member being provided with an aperture intermediate its ends, a pivot pin fixed in said member nearer said other end of said member, and a bafile positioned within said member and arranged in cooperative relation with said aperture to form a whistle, said baflle being pivotally mounted upon said pin for self-centering action within said member by the passage of gas on all sides of said baflle when said valve is operated to admit the flow of gas into said member.

4. 'In a device of the class described, a hollow body portion having an inlet opening for connecting said body to an exhaust pipe, said hollow body portion also having outlet passages in communication with said inlet opening, a valve selectively operable to control the passage of gas from saidfinlet opening into said outlet passages, hollow 'tubular members positioned respectively in said outlet passages, one of said hollow tubular members being open at both ends, the other of said hollow tubular members being closed at its outer end and being provided with an aperture intermediate its ends, and a baffle positioned within said last mentioned hollow tubular member in cooperative relation with said aperture to form a whistle, said baflle being pivotally mounted for self-centering action within said hollow tubular member in which it is mounted.

5. In a device of the class described, a hollow body portion having an inlet opening for connecting said body to an exhaust pipe, said hollow body portion also having a pair of parallel outlet passages in communication with said inlet opening, a swingably mounted valve selectively operable to control the passage of gas from said inlet openings into said outlet passages, hollow tubular members positioned respectively in said outlet passages, shoulders in said hollow body portion and against which the inner ends of said hollow tubular members abut, one of said hollow tubular members being open at both ends, the other of said hollow tubular members being closed at its outer end and being provided with an aperture intermediate its ends, a transverse pin through the forward end position of said last men tioned hollow tubular member, and a baffie pivotally mounted on said pin for self-centering action within said last mentioned hollow tubular member in cooperative relation with said aperture to form a whistle.

6. In a device of the class described, a hollow body portion having an inlet opening for connecting said body to an exhaust pipe, said hollow body portion also having a pair of parallel outlet passages in communication with said inlet opening, a valve selectively operable to control the passage of gas from said inlet opening into said outlet passages, hollow tubular members positioned respectively in said outlet passages, one

or" said hollow tubular members being open at both ends, the other of said hollow tubular members being closed at its outer end and being provided with an arcuate aperture intermediate its ends, said aperture having one side transversely straight, a pivot pin passing through the other of said hollow tubular members, a baffle defining a spherical sector positioned within said last mentioned hollow tubular member, arms extending from said baffle and pivotally and slidably journaled on said pin to position a part of said baffie adjacent said aperture for self-centering action within said last mentioned hollow tubular member, said baflie and said aperture cooperating together to form a whistle.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 913,632 Foster Feb. 23, 1909 1,024,683 Gray Apr. 30, 1912 1,034,530 Stump Aug. 6, 1912 1,630,317 Skonier May 31, 1927 

